'Low Pay Britain 2014', the Resolution Foundation’s annual audit of low pay across Britain, has found that the number of people earning less than two-thirds of median hourly pay, equivalent to £7.69 an hour, rose to 5.2 million, an increase of 250,000 on the previous year and 22% of the national workforce:
http://www.channel4.com/news/low-wages-money-earnings-record-employment-pay